CPC F01D 5/022 (2013.01) [F01D 5/025 (2013.01); F01D 5/066 (2013.01); F01D 5/087 (2013.01); F05D 2240/24 (2013.01); F05D 2250/73 (2013.01); F05D 2260/4031 (2013.01)] | 16 Claims |
1. A gas turbine engine rotor assembly configured to rotate around an axis, the rotor assembly comprising:
a first disc having a first body extending circumferentially and radially around the axis, a first set of circumferentially distributed blades protruding radially from the first disc, and a male spline extending axially relative the first body, the male spline extending around and along the axis, and
a second disc having a second body extending circumferentially and radially around the axis, a second set of circumferentially distributed blades protruding radially from the second disc, and a female spline extending around and along the axis, the female spline receiving the male spline in a spline engagement;
wherein the female spline includes a plurality of elongated, axially oriented grooves defined in a radially inner surface of the second disc, the grooves being circumferentially interspaced from one another, and the male spline includes a plurality of elongated, axially oriented keys protruding radially outwardly on a radially outer surface of the first disc, each one of the keys being snugly engaged within a corresponding one of the grooves to form the spline engagement;
wherein the first body and the second body have complementary cylindrical surfaces defining a spigot engagement therebetween.
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